Captive Portal

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Captive Portal Captive Portal is a non-profit network for the distribution of art related materials.

Open call: PlaceholderPlaceholder is a series of single-page works for the kiosk screen at Captive Portal, Fredericiagad...
15/09/2026

Open call: Placeholder

Placeholder is a series of single-page works for the kiosk screen at Captive Portal, Fredericiagade 12B, Copenhagen, and for the Captive Portal website. A placeholder is something that appears instead of something else. It is not the real thing but a deferral, a proposal, perhaps a kind of hope. It is also standardised and generic, and not meant to be looked at as a work of art. The content is open and, as far as an exhibition allows, unbound by outside agendas.

A work must be a single HTML file containing everything it needs. Images, video, sound, fonts, styles and scripts must be embedded in the file itself, for example as data URIs or inline code. The page must not load anything from the internet or from other files, and it must not send any data anywhere. Works that make network requests will not be shown.

The work can be text, images, animation, short videos, code or anything else that fits within a single page. It must run on its own from the moment it opens. The kiosk has no keyboard, mouse or touch input, so the page should function as a still image, a loop or a process that continues indefinitely.

On the kiosk the page is shown full screen at 1920 × 1080 pixels (1080p, landscape) in a Chromium-based browser. On the website it will be viewed in windows and on screens of other sizes, so the work should either adapt to the window or maintain its proportions and scale to fit. A template that places a 1920 × 1080 area in the centre of the page and scales it to the window is available at placeholder.oerum.org/works/template.html (save the page to get the file). The file must not exceed 2 MB. Any browser incompatibility or other issues that arise will be considered part of the work.

Send the file together with a title, your name, a short description of no more than 200 words, and a link to your website if you have one, to [email protected] by 15 October 2026. We will try to include as many submissions as possible. Each selected work will be published on cp.oerum.org and shown on the kiosk screen for at least one week, alongside the occasional bookshops held at Captive Portal. Submission is free, and no fee is paid for selected works. Artists retain all rights to their work. Captive Portal reserves the right to decline works it considers unsuitable.

Owing to other circumstances, we are unable to answer questions, offer technical help or provide anything beyond what is described here.

In Nanna Due and Andrew Nelson’s Everything is Computer (2025) we are tossed through a collapsing digital reality that i...
11/02/2026

In Nanna Due and Andrew Nelson’s Everything is Computer (2025) we are tossed through a collapsing digital reality that implies the imagined speed and decay if we follow the Landic notion of accelerationism. When all structures are forced to break and burst into chaos, it sends ripples through not only reality, but how we view both real and imaginary.

Experience Nanna Due & Andrew Nelson’s work “everything is computer” in the exhibition xÆTER from the 3rd
of December – 15th of March at Fredericiagade 12B at Captive Portal.

Adriana: Every sound around us is part of a symphony we can reshape using our imagination.Music morphs into what we need...
31/01/2026

Adriana: Every sound around us is part of a symphony we can reshape using our imagination.
Music morphs into what we need it to be, and this realization opens up a world of sounds beyond the expected.
I enjoy mixing in elements of what became mundane chaos, the sounds that are part of this world, sometimes gone unnoticed or
drowned in the river of noises.
Seldom the perception of sounds differs based on the context, and so this opens up a palette of "colors" to play with.
This is the road I'm currently on, my journey is just beginning and I hope I can help spark ideas out there.
Never stop imagining, never stop creating!

Experience Adriana Simona Andresel’s audio work “The Noise Between Us” in the exhibition xÆTER from the 3rd
of December – 15th of March at Fredericiagade 12B at Captive Portal.

In today’s society, in which economics, politics, and technology are bound up in a very complex manner,bullerup_autoserv...
20/01/2026



In today’s society, in which economics, politics, and technology are bound up in a very complex manner,
bullerup_autoservice cannot be a decorative element serving a state or an ideology. bullerup_autoservice
must be one of the media that serves to provoke doubt and defiance in us: it is a provocative communication
between you and me.bullerup_autoservice:

*Not to give false impression
Which could well be our intention
The jumble of fragments does not in any way constitute an altogether doctrine
These materials are accumulated by chance encounter
Expressions gleaned out of order under sometimes dubious circumstances
To expose these elements in all their incompleteness
Just this once
As thrash theory*

Experience bullerup_autoservice’s work “thrash_theory” in the exhibition xÆTER from the 3rd of December –
15th of March at Fredericiagade 12B at Captive Portal.

.petukhinaPetukhina: “I am exploring an alternative way of “sound out” contemporary environmental, social, mental,andtec...
12/01/2026

.petukhina

Petukhina: “I am exploring an alternative way of “sound out” contemporary environmental, social, mental,
andtechnological crises. My creative attention is focused on studying issues related to the ecology of thediet
and its impact on society. I want to create places, states, and an atmosphere where I want to bein harmony
with the environment and socio-cultural space. I propose possible solutions to the effects of sound pollution
and create a vision of a possible future using the language of art and technology, as well as trying to challenge
history and its artistic heritage through the prism of digital and technological innovations.”

Experience Katarina Petukhina’s work “INVERSION” (2022) in the exhibition xÆTER from the 3rd of
December – 15th of March at Fredericiagade 12B at Captive Portal.

Andreasen: My name is Karen Andreasen, I live in Trekroner studying Humanistic Technology at RUC. Iwork at the intersect...
08/01/2026



Andreasen: My name is Karen Andreasen, I live in Trekroner studying Humanistic Technology at RUC. I
work at the intersection of human experience, technological spaces and ecological structures. My artistic
practice centers around how coded and computational logic can merge with biological sensibilities. Through
audiovisual installations and multi-media sculptures I intend to explore how these intertwined systems might
collaborate and how it affects the human relationship with technology, nature and our own position in the
digital age.

Experience Karen Andreasen’s work “I AM YOU” (2025) in the exhibition xÆTER from the 3rd of December
– 15th of March at Fredericiagade 12B at Captive Portal.

Constructing specimen geometry...Meghan Thréinfhir is an artist, educator, and curator whose work bridges science, techn...
29/12/2025

Constructing specimen geometry...Meghan Thréinfhir is an artist, educator, and curator whose work bridges science, technology, and
spirituality. Using materials such as seaweed, copper, wax, and bog batteries, she builds constructions that
explore speculative relationships between witchcraft, animism, and scientific thought. Her recent projects
engage holographic theory, logic gates, and wormholes, reimagining technology as a means of connection
rather than control.
Thréinfhir developed & teaches Witch Tech, a series of courses that intertwine Python programming with
philosophical inquiry into technology’s roots in craft and divination. Her exhibitions include the solo
presentation Wormhole Animism at Steve Gilbert Studio (Seattle), the group exhibition Once Upon An Instant at
HTW Berlin, University of Applied Sciences (Germany), and the solo exhibition and residency Bog Memory /
Computer Memory at Captive Portal (Copenhagen). Drawing from alchemy, her Irish ancestry, and speculative
physics, Thréinfhir blurs the boundaries between art and science, inviting a contemplative encounter with the
cosmos and the entangled forces that sustain it.

Experience Meghan Thréinfhir work “Desire x Æther” (2025) in the exhibition xÆTER from the 3rd of
December – 15th of March at Fredericiagade 12B at Captive Portal.

Socials: - - : - - Hagfags: ”HagFags består af den dansk-finske duo Sangría Valentino og Henna Nerg og er et langvar...
20/12/2025

Socials: - - : - -

Hagfags: ”HagFags består af den dansk-finske duo Sangría Valentino og Henna Nerg og er et langvarigt,
interdisciplinært kunstprojekt, der gennem performance, video, tekstil, fotografi og skulptur undersøger
q***r ritualer, miljøsorg, kropslig historie og feministisk modstand. Med heksen som både figur og metode
arbejder vi med, hvordan marginaliserede kroppe kan skabe forstyrrelser i digitale og sociale infrastrukturer.
Gennem vores alteregoer, Mr. Pentatits og It’s Whitney Witch, udforsker vi q***r identitet, traume, tab og
økologisk vold, og hvordan disse kan mærkes og eksistere i både digital og fysisk materialitet.
Vores videoværk fungerer som arkiv, spejl og rituel transformation, hvor fragmenter af hukommelse, krop og
data flettes sammen. Samarbejdet, der udspiller sig fysisk, kulturelt og digitalt mellem Finland og Danmark,
er både et arbejdsfællesskab og en modstandspraksis, der insisterer på langsomhed, omsorg og eksperimenter
på tværs af tid, steder og medier. Vi spørger, hvordan det immaterielle — hukommelse, affekt, sorg, begær —
kan manifestere sig gennem digital materialitet, og hvordan digitale billeder, hud, tekstiler og ritualer kan
bære det, der ikke umiddelbart lader sig oversætte. Projektet arbejder med ikke-lineær tid, spekulative
fortællinger og en æstetik, der bevæger sig mellem det hellige og det profane, det groteske og det smukke,
myte og samtid. Vi undersøger forbindelser mellem nordisk heksehistorie, koloniale og patriarkalske
magtstrukturer, q***r- og eco-feminisme samt nutidige kriser knyttet til klima, kroppens sårbarhed og
marginalisering.”

Søren Katborg-Vestergaard: ”Mit kunstneriske arbejde afsøger rummet mellem det digitale og det fysiske ivores samtid. Vi...
16/12/2025

Søren Katborg-Vestergaard: ”Mit kunstneriske arbejde afsøger rummet mellem det digitale og det fysiske i
vores samtid. Vi har muligheden for at undersøge identitet, udtrykkelse, hukommelse og miljø i grænsefeltet
mellem det fysiske og det digitale, og gør det endda ubevidst. Vores digitale tilstedeværelse påvirker direkte
vores opfattelse af virkeligheden og os selv. Vi får givet unikke muligheder for selvartikulering, og identitet
som kan udfordre normer, sprog og forståelsen af sociale interaktioner. Det digitale tillader en slags
fuldkommen kontrol, en styring som er svær at tage over fysiske rum. I min praksis undersøger jeg dermed
måderne vi interagerer med det digitale, men også måden computere og software kommunikerer tilbage til
os.”

"My artistic work explores the space between the digital and the physical in our contemporary world. We have the opportunity to examine identity, expression, memory, and environment in the borderland between the physical and the digital, and we do so even unconsciously. Our digital presence directly influences our perception of reality and ourselves. We are given unique opportunities for self-expression and identity that can challenge norms, language, and the understanding of social interactions. The digital realm allows for a kind of complete control, a level of control that is difficult to achieve in physical spaces. In my practice, I explore the ways we interact with the digital, but also the way computers and software communicate back to us."

Experience Søren Katborg-Vestergaard’s do you feel what I feel do you see what I see (2023) as part of the exhibition xÆTER from the 3rd of December – 15th of March at Fredericiagade 12B at Captive Portal.

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